The “On the Go” Myth?

Shortly after I wrote that post, I cracked open my copy of Tomi Ahonen’s latest book, Mobile as 7th of the Mass Media, and found part of the answer to my question on third page.

Tomi writes:

A study by NTT DoCoMo, the largest wireless carrier (mobile operator) of Japan, discovered that 60% of all wireless data access by cellphone is done indoors, often in parallel with watching TV or surfing the internet on a PC.

Only three pages in and I’ve already found useful information. Can’t wait to read the rest of the book!

I don’t see any reason indoor usage would be substantial different in other parts of the world, but I’d still love to see some definitive information for other countries.